Pole and like erecting machine.



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PATENTED DEC. 31, 1907.

J. H. GREEN.-

POLE AND LIKE ERECTING MACHINE.

APPLICATION FILED SEPT. 30. 1907.

2 SHEETS-SHEET 1.

PATENTED DEC. 31, 1907.

J. H. GREEN.

POLE AND LIKE EREOTING MACHINE.

APPLICATION FILED SEPT. 30, 1907.

2 SHEETSSHBET 2.

THE NORRIS PETERS Ca V JOHN HENRY GREEN, OF SALFORD, ENGLAND.

POLE AND LIKE ERECTING MACHINE.

Specification of Letters Patent.

Patented Dec. 31, 1907 Ilpplication filed September 30,1907- Serial No.395,204.

To all whom it may concern:

Be it known that 1, JOHN HENRY GREEN, a subject of the King of GreatBritain and Ireland, and resident of Salford, Manchester,

' England, have invented certain new and useful Improvements in Pole andLike Erecting Machines, of which the following is a specification.

These improvements refer to telegraph and like pole erecting andlowering machines of the type in which the pole is clamped upon anoscillating table and by means of gearing and a barrel, chain andpivoted lifter, the pole is raised from the horizontal to the vertical,or vice versa.

The object of the improvements is to overcome certain practicalobjections to the machine as at present made, and generally to render itbetter adapted for the purposes intended.

The improvements will be best described with the aid of the accompanyingdrawing, whereon Figure 1 illustrates a side elevation, and Fig. 2 aplan (partly broken away and the broken away part shown above each view)of the pole raising and lowering machine with the improvements appliedthereto. Figs. 3 and 4 illustrate certain details hereinafter described.

According to the invention, the barrel a, see Fig. 2, around which thechain 1) wraps, instead of being parallel sided as heretofore is made toa special form, whereby as the pole is raised (or lowered) the-chain bwraps on to (or off) the barrel at a rate which insures an even tensionbeing maintained in all positions of the pole. That is to say, with thelifter 0 having a rate of angular movement different from that of thetable d -on which the pole is clamped, and the table and barrel beingoperated by or through the same train of gearing, the chain requires towrap on to the barrel at a rate in keeping with the rate at which thelifter follows the pole. The barrel shown in Fig. 2 represents the shapethat has been found best in prac tice, the chain being secured to thewider end of the barrel and wrapping onto the narrower end as the lifterrises. To insure of the chain wrapping on to it in regular coils thebarrel is grooved as shown.

In the machine as at present made two sets of gear wheels are suggested,but according to these improvements three sets are employed e e 6 thusaffording a treble urchase and making the machine absoutely safe andmore powerful in raising heavy poles. The pinion of the third set ofwheels (on its shaft) may be slidably mounted and thus allow of itsbeing thrown out of gear, a lever f and collar 9 serving to hold it inposition and to free it, see Fig. 2.

The lifter 0, instead of being of wood as heretofore, is now made ofangle iron or steel, and, instead of being in one straight length, isbifurcated or forked at its lower end. The two extremities of the forkedportion of the lifter lie respectively at or near the opposite ends ofthe axis h, and on opposite sides of the machine, thus causing thelifter to be free from all liability to move sidewise or buckle when inuse, and especially when being used for hoisting a pole on to or off thetable d. The angle iron of which the lifter is made is preferably in twolengths, the portions at the free end of the lifter lying parallel toeach other and being firmly riveted together. At its lower end thelifter may be stiffened by a connecting rod 0 For limiting the fall ofthe lifter and for supporting it firmly when a pole is being placed uponit, a strut i is provided formed say of a piece of iron piping.

At its free end the lifter is fitted with a yoke j which carries rollers7c, and the outer part of such yoke, which is adjustably hinged at oneend, is held around the pole and secured at its other end by a removablecotter or pin Z. To this pin is secured one end of a chain m which afterpassing over a small guide pulley it extends downwards to a point where,with the lifter vertical, it can be reached from the ground.

When a pole is on the table (I it rests also upon the rollers 7c in theyoke j, and after being clamped to the table the pole is also The liftercarries two guide pulleys 0 0 quiring to lift a pole on to the table(the lifter then being vertical) the chain passes under the pulley 0over pulley 0 anddown again, its free end being looped around the pole.When requiring to tilt the pole to a vertical, after being placed on thetable and made secure, the chain is withdrawn from below the ulley 0 andpassed over pulley 0 only, its free end being then hooked to themachine, or say to the axis h.

Instead ofa Whole worm wheel being used for meshing with the worm p bywhich the table is rotated, a segmental or quadrant worm Wheel g isused, see Fig. 1 thus lessenin the height of the gears, and, when the tale is horizontal, allowing of the pole being readily placed thereon orremoved therefrom. I

To allow for the convenient placing of the pole on the table d and toprotect the gear wheels, a stout iron bar or tube r, see Fig. 4 is usedwhich at one end rests upon the floor and at the other end fits into theend of the worm quadrant shaft the bar or tube being so bent as to lieat an angle to the machine and form a guide up .or down which the polewill slide when being hoisted or lowered.

For use in supporting the pole While being moved on to and off thetable, a loose portable frame 8, see Fig. 3, is used, the ends of whichfit holes in the table while the frame wheel '0 is moved out of gearwith the wheel 'w by a lever 00. The forward movement of the lifter islimited by angle iron bars y secured to the machine frame, one on eachside. To prevent the lifter or pole being accidentally lowered and togive the operator a rest when winding the chain, a ratchet wheel 2 andpawl z are provided.

The table d is preferably made of one solid piece of sheet iron, and theholdfasts d for clamping a pole to the table are of V formation so as tofit varying diameters of poles, one end of the holdfast being hinged tothe table and the other end being free but capable of being engaged by aholding down bolt d linked to the table.

Other improvements consist in stiffening the machine by iron tubularstays 2 and further in so proportioning the parts that in all positionsof the lifter and pole the machine is stable and safe in use, theseveral parts being shaped and proportioned as shown in the drawings.

What I claim is:

1.- In a pole erecting or lowering machine, the combination with twoside frames, means for holding the frames together and a table axiallysupported by the said frames of a lifter pivotally supported by theframes, a barrel also axially supported by the said frames, andfa chainsecured at one end to the barrel and at the other end to the axle of thetable after engaging the lifter, and

means for simultaneously operating the ta ble and barrel, the saidbarrel being formed to a shape whereby as the lifter is raised to thevertical about its pivot the chain Wraps on to the barrel at a ratecorresponding to the angular movements of the lifter, substantially asherein set forth.

2. In a pole erecting or lowering machine, the combination with the twoside frames, means for holding the said frames together, a table axiallysupported by the said frames, a barrel also axially supported by thesaid frames, a chain secured to the barrel at one end and to the tableaxle at the other end and a lifter composed of two lengths of angle ironbraced together for a portion of their length and for the other portionbent in divergent directions, the ends of the last named portion beingpivotally connected to the machine pulleys carried by the lifter andaround certain of which the said chain passes, substantially as hereinset forth.

3. In combination in a pole erecting or lowering machine two sideframes, means for holding theframes together, a table axially supportedby the said frames, a lifter with bifurcated portion pivotally supportedby the frames and pulleys carried by the lifter, a barrel also axiallysupported by the said frames, a chain secured at one end to the barreland at the other end to a fixed part of the machine after passing overcertain of the pulleys carried by the lifter, a set of gear wheels andshafts giving a treble purchase and when rotated serving to rotate thebarrel, a segmental worm quadrant on the table axis, a shaft alongsidethe machine frame, and in a bearing carried by the frame, a worm andbevel wheels on said lifter, a chain secured to the barrel at one endand to the table axle at the other after gassing over certain of thepulleys carried ing chain connected to said pin and a pulley 10 y thelifter, and a fitment carried by the carried by the lifter over whichthe chain lifter consisting of a pair of arms or horns passes,substantiallyas herein set forth. arranged in a plane at right angles tothe In Witness whereof I have hereunto set lifter, rollers carried bythe said arms, a my hand in the presence of tWo Witnesses.

bar-like member hinged at one end to one JOHN HENRY GREEW. of the arms,and means for adjustably l/Vitnesses: fastening the other end to theother arm, F.G.PENN1NGTON,

said means comprising a pin, a long releas- JOHN CAMP.

